JP2001322170A - Pipe lining material reversal nozzle and pipe lining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pipe lining material reversal nozzle which enables a worker to enter and leave a manhole during a lining work. SOLUTION: A guide tube fixing nozzle 3 to fix an end of a guide tube 10 is airtightly connected integrally to a pipe lining material fixing nozzle 2 to fix a turnup end of an unreversed pipe lining material 20 through a closing plate 4, while the diameter of the nozzle 3 is made smaller than that of the nozzle 2, thereby constituting the pipe lining material reversal nozzle 1. Since the diameter of the nozzle 3 is made smaller than that of the nozzle 2, the tube 10 having a smaller diameter than a pipe line (or the pipe lining material 20) can be used, and hence a sufficient gap is formed between the tube 10 and the manhole, so that a worker can freely enter or leave the manhole during a lining work.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe lining material reversing nozzle and a pipe lining method using the nozzle.

[0002]

2. Description of the Related Art When a pipeline such as a sewer pipe buried underground is deteriorated, the pipeline is repaired by lining its inner peripheral surface without excavating the pipeline from the ground. A pipe lining method has been proposed and is already in practical use. As one of such pipe lining methods, after the pipe lining material is invertedly inserted into the pipe by fluid pressure, the pipe lining material is pressed against the inner wall of the pipe, and the curable material impregnated in the pipe lining material is impregnated. There is known one in which a resin is cured.

In the above-mentioned pipe lining method, for example, as shown in FIG. 16, one end of a pipe lining material 101 is folded outward, and the folded portion is fixed to the outer periphery of the upper end of a top collar 102 installed on the ground. The pipe lining material 101 is inverted by water pressure by injecting water from a water injection hose 103 into the folded portion of the pipe lining material 101, and the pipe lining material 101 is inserted into the pipe 150 through the manhole 151. Was used.

[0004]

However, in the conventional pipe lining method shown in FIG. 16, since the pipe lining material 101 having substantially the same diameter as the inner diameter of the pipe 150 passes through the manhole 151, the pipe 150 is particularly large. In the case of the diameter, the opening of the manhole 151 is almost completely closed by the pipe lining material 101, and there is a problem that the worker cannot enter the manhole 151 for inspection or the like during lining construction. Also, the pipe line 1 is added to the pipe lining material 101.
There is also a problem that a portion not provided for the lining 50 (a portion extending from the pipe 150 to the ground through the manhole 151) inevitably occurs, and this portion has been disposed of and is uneconomical.

In view of this, a method has been proposed in which a cylindrical pipe lining material reversing nozzle 104 is installed at the bottom of the manhole 151 as shown in FIG.
In this method, a guide tube 106 having one end attached to a top collar 105 installed on the ground is inserted into a manhole 151, and the other end is fixed to a guide tube fixed end that opens to one end of a pipe lining material reversing nozzle 104. At the same time, the pipe lining material 101 is placed in the guide tube 106 and the pipe lining material inversion nozzle 104 from the ground side.
The pipe lining material 101 is bent outward and fixed to a pipe lining material fixed end that opens to the other end of the pipe lining material reversing nozzle 104, and the inside of the folded portion of the pipe lining material 101 is injected from the water injection hose 103. By injecting water, the pipe lining material 101 is compressed by water pressure into the pipe line 150.
Is a method of inverting insertion into

However, also in the above method, the fixed end of the guide tube of the pipe lining material reversing nozzle 104 has the same diameter as the fixed end of the pipe lining material. The diameter of the manhole 151 becomes large, and the opening of the manhole 151 is almost closed by the guide tube 106 as shown in FIG. 17, so that a worker cannot enter the manhole 151 for inspection or the like during lining construction. was there.

When the tube lining material 101 is inverted using an elbow-shaped tube lining material reversing nozzle 107 bent at 90 ° as shown in FIG. 18, the height dimension H of the tube lining material reversing nozzle 107 is growing. In order for the pipe lining material reversing nozzle 107 to pass through the opening of the manhole 151, the height dimension H must be smaller than the opening diameter D of the manhole 151 (H <D). Since the diameter d of the material fixed end is limited by the height dimension H, the pipe line to which this kind of pipe lining material reversing nozzle 107 can be applied is limited to a small diameter pipe.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a pipe lining material reversing nozzle which enables an operator to enter and exit a manhole during a lining operation, and a pipe using the same. To provide a lining method.

[0009]

To achieve the above object, the present invention provides a guide tube fixing nozzle for fixing one end of a guide tube, and a folded back of a non-inverted tube lining material passed through the inside of the guide tube. A pipe lining material fixing nozzle for fixing one end is hermetically connected and integrated with a closing plate, and the diameter of the guide tube fixing nozzle is set to be smaller than the diameter of the tube lining material fixing nozzle to form a tube lining material reversing nozzle. It is characterized by comprising.

Further, the present invention provides a guide tube fixing nozzle for fixing one end of a guide tube, and a tube lining material fixing nozzle for fixing a folded one end of an unreversed tube lining material passed through the inside of the guide tube. And airtightly connected and integrated with a closing plate, as a pipe lining method constructed using a pipe lining material reversing nozzle formed by setting the diameter of the guide tube fixing nozzle smaller than the diameter of the pipe lining material fixing nozzle, The pipe lining material reversing nozzle is installed such that the pipe lining material fixing nozzle faces the opening of the pipe line, and the guide tube fixed to the guide tube fixing nozzle of the pipe lining material reversing nozzle is placed substantially vertically on the ground. The pipe lining material fixed to the pipe lining material fixing nozzle is extended into the pipe line by fluid pressure. Inverted insertion, while pressing the pipe lining material on the inner wall of the conduit, characterized in that so as to cure the curable resin impregnated in the tube liner.

Therefore, according to the present invention, the diameter of the guide tube fixing nozzle of the pipe lining material reversing nozzle is set smaller than the diameter of the pipe lining material fixing nozzle.
A guide tube smaller in diameter than the pipe (or pipe lining material) can be used, and a necessary and sufficient gap is formed between the small-diameter guide tube and the manhole. Can freely enter and exit the manhole to check and confirm the condition of the lining.

Further, according to the present invention, since the inversion of the pipe lining material is performed using the guide tube, it is not necessary to extend the pipe lining material to the ground through the manhole, and the pipe is discarded without being used for lining. Efficiency can be improved by eliminating the lining material.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, various embodiments of a pipe lining material reversing nozzle (hereinafter, simply referred to as a reversing nozzle) according to the present invention will be described with reference to FIGS.

FIG. 1 is a cross-sectional view of a reversing nozzle 1 according to a first embodiment. The reversing nozzle 1 includes a cylindrical tube lining material fixing nozzle 2 and a cylindrical guide tube fixing nozzle 3 similarly to a disk. It is configured to be airtightly connected and integrated with a closing plate 4 in a shape of a circle.

The tube lining material fixing nozzle 2, the guide tube fixing nozzle 3, and the closing plate 4 are made of metal such as iron, aluminum, stainless steel or plastic.
The diameter of the pipe lining material fixing nozzle 2 is set to be equal to or slightly smaller than the diameter of the pipe line to be lined, and the diameter of the guide tube fixing nozzle 3 is set to be smaller than the diameter of the pipe lining material fixing nozzle 2. .

The closing plate 4 is welded to the inner periphery of the rear end (left end in FIG. 2) of the nozzle 2 for fixing the pipe lining material, and the guide tube fixing nozzle 3 is removably inserted and fixed to the closing plate 4. ing. That is, the guide tube fixing nozzle 3 is inserted at a position slightly offset below the center of the closing plate 4, and a flange 3 a formed on the outer periphery thereof is brought into contact with the closing plate 4 via the packing 5, and the closing plate 4 is closed. The guide tube fixing nozzle 3 is detachably attached to the closing plate 4 by a plurality of bolts 6 inserted into the packing 4, the packing 5 and the flange 3 a, and a nut 7 screwed to the bolt 6.

Thus, the reversing nozzle 1 according to the present embodiment
In the above, the guide tube 10 is attached to the outer circumference of the guide tube fixing nozzle 3, and this guide tube 10 is an inner surface guide tube 10a having an inner / outer two-layer structure.
The outer surface guide tube 10b is attached to the outer circumference of one end of the guide tube fixing nozzle 3, and the inner inner guide tube 1
No. 0a is passed through the inside of the guide tube fixing nozzle 3, and its end is turned outward and attached to the outer periphery of the other end of the guide tube fixing nozzle 3.

Here, the inner surface guide tube 10a and the surface guide tube 10b are formed by hermetically covering the surface or inner surface of a tubular body made of woven or nonwoven fabric with a plastic film. In addition, nylon and polyester fibers are used as the woven fabric, polyester is mainly used as the material of the nonwoven fabric, and a polyurethane or polyethylene simple film, a composite film containing polyethylene, nylon, EVOH, etc. is used as the plastic film. Can be

An unreversed pipe lining material 20 is passed through the guide tube 10 and the reversing nozzle 1, and one end of the pipe lining material 20 extending outward from the reversing nozzle 1 is folded outward to form a reversing nozzle. One of the nozzles for fixing the pipe lining material 2 is attached to the outer periphery of one end on the opening side.
Although not shown, if a tubular body separate from the pipe lining material is attached to one end of the pipe lining material, and this tubular body is made of a material that is more flexible and easier to bend than the pipe lining material, the wall thickness is increased. Even if the pipe lining material is relatively hard because it is thick or made of reinforcing fibers, the tubular body attached to one end of the pipe lining material is easily bent outward, and the bent portion is formed by the pipe lining material. It can be easily and reliably attached to the outer periphery of the fixed nozzle.

Further, as shown in FIG. 1, a compressed air supply port 8 is formed in the upper part of the closing plate 4 of the reversing nozzle 1, and a drain port 9 is formed in the lower part.
Is connected to an air hose 40 derived from the compressor 30 installed on the ground, and a drain hose 50 is inserted through the drain port 9.

Next, the reversing nozzle 11 according to the second embodiment
Will be described with reference to FIG.

FIG. 2 shows a reversing nozzle 11 according to the second embodiment.
FIG. 3 is a cross-sectional view of the reversing nozzle 11 according to the present embodiment.
Is obtained by welding a closing plate 4 on the inner periphery of the front end (right end in FIG. 2) of the pipe lining material fixing nozzle 2 in the opposite manner to the first embodiment, and the other configuration is the reverse nozzle shown in FIG. Same as that of 1. Therefore, in FIG. 2, the same elements as those shown in FIG. 1 are denoted by the same reference numerals.

Next, the reversing nozzle 21 according to the third embodiment
Will be described with reference to FIG.

FIG. 3 shows a reversing nozzle 21 according to the third embodiment.
FIG. 3 is a cross-sectional view of the reversing nozzle 21 according to the present embodiment.
Is a configuration in which the guide tube fixing nozzle 23 in the reversing nozzle 11 shown in FIG. 2 is replaced with a part having a bend, and the other configuration is the same as that of the reversing nozzle 11 shown in FIG. . Therefore, in FIG. 3, the same elements as those shown in FIG. 2 are denoted by the same reference numerals.

Next, the reversing nozzle 31 according to the fourth embodiment will be described.
Will be described with reference to FIG.

FIG. 4 shows a reversing nozzle 31 according to the fourth embodiment.
FIG. 3 is a cross-sectional view of the inversion nozzle 41 according to the present embodiment.
Is a reversing nozzle 11 shown in FIG. 2 in which a guide tube fixing nozzle 33 is obliquely inserted into and fixed to the closing plate 4, and the other configuration is the reversing nozzle 1 shown in FIG.
Same as that of 1. Therefore, in FIG.
The same components as those shown in FIG.

Next, the reversing nozzle 41 according to the fifth embodiment
Will be described with reference to FIG.

FIG. 5 shows a reversing nozzle 41 according to the fifth embodiment.
FIG. 3 is a cross-sectional view of the inversion nozzle 41 according to the present embodiment.
In this embodiment, the guide tube fixing nozzle 43 in the reversing nozzle 11 shown in FIG. 2 is replaced with a 30 ° elbow-shaped nozzle, and the other configuration is the same as that of the reversing nozzle 11 shown in FIG. Therefore, in FIG. 5, the same elements as those shown in FIG. 2 are denoted by the same reference numerals.

Next, the reversing nozzle 51 according to the sixth embodiment
Will be described with reference to FIG.

FIG. 6 shows an inversion nozzle 51 according to the sixth embodiment.
FIG. 3 is a cross-sectional view of the reversing nozzle 51 according to the present embodiment.
In this embodiment, the guide tube fixing nozzle 53 in the reversing nozzle 41 shown in FIG. 5 is replaced with a 90 ° elbow-shaped nozzle, and the other configuration is the same as that of the reversing nozzle 41 shown in FIG. Accordingly, in FIG. 6, the same elements as those shown in FIG. 5 are denoted by the same reference numerals.

Next, the reversing nozzle 61 according to the seventh embodiment
Will be described with reference to FIGS. 7 and 8. FIG.

FIG. 7 shows a reversing nozzle 61 according to the seventh embodiment.
8 is an exploded perspective view of the reversing nozzle 61. The reversing nozzle 61 according to the present embodiment integrates the pipe lining material fixing nozzle 62 and the closing plate 64, and A circular hole 64a is formed, and a guide tube fixing nozzle 63 is detachably mounted around the circular hole 64a of the closing plate 64 with a plurality of bolts 66.

That is, a flange 63a is formed on the outer periphery of one end of the guide tube fixing nozzle 63.
As shown, a plurality (six in the illustrated example) of tap holes 63b are formed in 3a. Also, the same number (six) as the number of the tap holes 63b is provided around the circular holes 64a of the closing plate 64.
The bolt insertion hole 64b is formed.

Thus, the closing plate 64 with the packing 63 interposed between the flange 63 a of the guide tube fixing nozzle 63.
By pressing a bolt 66 inserted through the bolt insertion hole 64b formed in the closing plate 64 into the tap hole 63b formed in the flange 63a of the guide tube fixing nozzle 63. The tube fixing nozzle 63 is detachably attached to the closing plate 64.

In the reversing nozzle 61,
One end of a guide tube (not shown) is attached to the outer periphery of one end of the guide tube fixing nozzle, and a tube lining material (not shown) passes through the guide tube, the guide tube fixing nozzle 63 and the circular hole 64a. One end extending outward from the nozzle is bent outward and attached to the outer periphery of one end on the opening side of the pipe lining material fixing nozzle 62.

A compressed air supply port 69 is formed above the closing plate 64 of the reversing nozzle 61. The compressed air supply port 69 is connected to an air hose 40 derived from a compressor (not shown) installed on the ground. Have been.

Next, an inversion nozzle 71 according to the eighth embodiment.
Will be described with reference to FIGS.

FIG. 9 shows a reversing nozzle 71 according to the eighth embodiment.
10, FIG. 10 is an enlarged detailed view of a part A in FIG. 9, and FIG. 11 is an exploded perspective view of the reversing nozzle 71. The reversing nozzle 71 according to the present embodiment is the same as the reversing nozzle according to the seventh embodiment. 61, the pipe lining material fixing nozzle 62 and the closing plate 64 are configured to be dividable, and the other configuration is the same as that of the reversing nozzle 61 according to the seventh embodiment. Accordingly, in FIGS. 9 to 11, the same elements as those shown in FIGS. 7 and 8 are denoted by the same reference numerals, and description thereof will be omitted below.

In the reversing nozzle 71 according to the present invention,
The pipe lining material fixing nozzle 62 and the closing plate 64 are vertically divided into two parts by a horizontal dividing line.
As shown in FIG.
A plurality of bolts 76 inserted through the flange portions 64A, 64B
And a nut 77 that is screwed to the bolt 76.

Next, a pipe lining method according to the present invention constructed by using the reversing nozzle 1 shown in FIG.
5 will be described. 12 to 15 are sectional views showing the pipe lining method according to the present invention in the order of the steps.

In FIG. 12, reference numeral 80 denotes a pipe such as a sewer pipe buried underground, and a manhole 81 opening to the ground is connected to the pipe 80.

When the pipe 80 is lined, the reversing nozzle 1 is introduced into the manhole 81 with the pipe lining material fixing nozzle 2 down as shown in FIG. One end of the guide tube 10 is attached to the outer periphery of the guide tube fixing nozzle 3, and the folded one end of the tube lining material 20 is attached to the outer periphery of the tube lining material fixing nozzle 3. The hose 50 is inserted, and the air hose 40 is attached to the compressed air pressure 8 (see FIG. 1). still,
A top nozzle 82 is attached to the other end of the guide tube 10.

As described above, in the reversing nozzle 1, the diameter of the guide tube fixing nozzle 3 is set smaller than the diameter of the tube lining material fixing nozzle 2, so that the guide tube fixing nozzle 3 is fixed to the tube lining material. It does not protrude radially outward from the nozzle 2, does not hinder the guide tube fixing nozzle 3 when the reversing nozzle 1 is introduced into the manhole 81, and the reversing nozzle 1 has a diameter of the pipe lining material fixing nozzle 2. It is easily introduced through the opening of the manhole 81 having a larger diameter.

Here, the tube lining material 20 is formed by covering a tubular non-woven fabric such as polyester, vinylon, acrylic or the like impregnated with an uncured liquid curable resin with a highly air-tight plastic film such as polyurethane or polyethylene. As the uncured liquid curable resin impregnated in the tubular nonwoven fabric, a thermosetting resin such as an unsaturated polyester resin, a vinyl ester resin, or an epoxy resin is used.

Then, as shown in FIG. 13, the reversing nozzle 1 is moved from the opening of the conduit 80 at the bottom in the manhole 81 by one.
In a set state, the pipe lining material fixing nozzle 2 of the reversing nozzle 1 is opposed to the pipe 80, and the guide tube fixing nozzle 3 is opposite to the pipe in a set state. It opens horizontally on the side,
The guide tube 10 having one end (lower end) fixed to the guide tube fixing nozzle 3 has a manhole 81 as shown in the figure.
The top nozzle 82 extending vertically inside toward the ground and attached to an end (upper end) thereof is set and supported on a gantry 83 installed on the ground.

The drain hose 50 and the air hose 40 connected to the reversing nozzle 1 also extend to the ground through the manhole 81, and the air hose 40 is connected to the compressor 30 installed on the ground.

Thereafter, as shown in FIG. 13, water is supplied from the upper end opening of the guide tube 10 attached to the top nozzle 82 by the water injection hose 84 to the guide tube 10.
, The pipe lining material 20 is inserted into the pipe 80 while being inverted by water pressure. And
In a state where the pipe lining material 20 is invertedly inserted by a predetermined length into the pipe 80, a pressurized space S ′ sealed with water is provided inside the pipe lining material 20 and the inversion nozzle 1 as shown in FIG. It is formed.

In the state shown in FIG. 14, the compressor 30 is driven to supply compressed air to the air hose 4.
0 to the pressurized space S ′, the pipe lining material 2
0 is sequentially inserted into the pipe 80 while being reversed by the pressure of the compressed air. When the pipe lining material 20 is inserted upside down into the pipe 80 in this way, the pipe lining material 20
Is pressed against the inner wall surface of the conduit 20, and the inner surface of the nonwoven fabric is covered with the plastic film.

As shown in FIG. 15, when the pipe lining material 20 is inserted upside down into the pipe 80 over its entire length, a sealing cap 85 is provided above the top nozzle 82 with a plurality of G clamps. A sealed space S is formed inside the sealing cap 85 and the pipe lining material 20 by being covered by the sealing cap 85, and the air hose 40 derived from the compressor 30 is connected to the sealing cap 85.

By the way, as described above, the pipe lining material 2
When 0 is invertedly inserted into the pipe 80, the hot water hose 87 attached to the end end of the pipe lining material 1 is drawn into the inside of the pipe lining material 20, and the hot water hose 87 airtightly closes the sealing cap 85. To the outside of the closed space S. A plurality of hot water injection ports (not shown) are formed in a portion of the hot water hose 87 facing the closed space S.

In the closed space S, the drain hose 50 is provided.
Faces airtightly through the sealing cap 85,
One end is opened at the bottom in the pipe lining material 20 as shown in the figure, and the end of the portion extending outside the closed space S is opened above a hot water tank 88 installed on the ground.

Hot water is stored in the hot water tank 88, and a hot water pipe 89 extending from a side wall of the hot water tank 88 is connected to a suction side of a hot water pump 90, and is connected to a discharge side of the hot water pump 90. Is connected to the hot water hose 87, and a boiler 91 is provided in the middle of the hot water hose 87.

Then, the compressor 30 is driven in the state shown in FIG.
0 to the closed space S, the pipe lining material 2
0 is expanded by the pressure of the compressed air and pressed against the inner peripheral surface of the conduit 80 as shown. Then, with the pipe lining material 20 pressed against the inner peripheral surface of the pipe 80 in this manner,
The tube lining material 20 is heated to cure the thermosetting resin impregnated therein, and this curing operation is performed in the following manner.

That is, when the hot water pump 90 and the boiler 91 are driven and the hot water in the hot water tank 88 is heated to a predetermined temperature by the boiler 91 and sent to the hot water hose 87,
Hot water is injected into the inside of the pipe lining material 20 as shown in the drawing from the plurality of hot water injection holes drilled at appropriate intervals in the length direction of the hot water hose 87, and is used for heating the pipe lining material 20. The warm water that has been cooled by the heating of the lining material 20 accumulates at the bottom in the pipe lining material 20. Then, the hot water accumulated at the bottom in the pipe lining material 20 is sent out to the drain hose 50 by the internal pressure of the closed space S,
The water is returned to the hot water tank 88 through the drain hose 50.

Thereafter, in the same manner as described above, hot water is circulated and the pipe lining material 20 is heated by the hot water, whereby the thermosetting resin impregnated in the pipe lining material 20 is cured, and the cured pipe lining material 20 is cured. By line 80
Is lined and repaired.

In the above, in the reversing nozzle 1 used in the pipe lining method according to the present invention, the diameter of the guide tube fixing nozzle 3 is changed to the pipe lining material fixing nozzle 2.
Is smaller than the diameter of the guide tube 10, the guide tube 10 having a smaller diameter than the conduit 80 (or the pipe lining material 20) can be used, and a necessary and sufficient gap is formed between the small-diameter guide tube 10 and the manhole 81. To be
From the gap, the worker can use the manhole 8 during lining work.
1 can freely enter and exit to check and confirm the lining situation and the like.

According to the pipe lining method of the present invention, since the pipe lining material 20 is inverted using the guide tube 10, it is not necessary to extend the pipe lining material 20 to the ground through the manhole 81. The cost efficiency can be improved by eliminating the pipe lining material 20 that is not provided for lining and discarded.

In the above, the pipe lining method constructed by using the reversing nozzle 1 shown in FIG. 1 has been particularly described.
Inverting nozzles 11, 21, 31, 4 shown in FIGS.
Even if the pipe lining is constructed using 1, 51, 61, 71, the same effect as described above can be obtained.

[0060]

As is apparent from the above description, according to the present invention, since the diameter of the guide tube fixing nozzle of the pipe lining material reversing nozzle is set smaller than the diameter of the tube lining material fixing nozzle, the pipe line (or A guide tube having a smaller diameter than the pipe lining material can be used, and a necessary and sufficient gap is formed between the small-diameter guide tube and the manhole, so that the worker can freely move to the manhole during the lining work from the gap. And the lining condition and the like can be checked and confirmed.

Further, according to the present invention, since the pipe lining material is inverted using the guide tube, there is no need to extend the pipe lining material to the ground through the manhole, and the pipe which is discarded without being used for lining. The effect that the economic efficiency can be improved by eliminating the lining material is obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view of a pipe lining material reversing nozzle according to Embodiment 1 of the present invention.

FIG. 2 is a sectional view of a pipe lining material reversing nozzle according to Embodiment 2 of the present invention.

FIG. 3 is a sectional view of a tube lining material reversing nozzle according to Embodiment 3 of the present invention.

FIG. 4 is a sectional view of a tube lining material reversing nozzle according to Embodiment 4 of the present invention.

FIG. 5 is a sectional view of a tube lining material reversing nozzle according to Embodiment 5 of the present invention.

FIG. 6 is a perspective view of a tube lining material reversing nozzle according to Embodiment 6 of the present invention.

FIG. 7 is a sectional view of a tube lining material reversing nozzle according to Embodiment 7 of the present invention.

FIG. 8 is an exploded perspective view of a pipe lining material reversing nozzle according to Embodiment 7 of the present invention.

FIG. 9 is a sectional view of a tube lining material reversing nozzle according to Embodiment 8 of the present invention.

FIG. 10 is an enlarged detail view of a portion A in FIG. 9;

FIG. 11 is an exploded perspective view of a tube lining material reversing nozzle according to Embodiment 8 of the present invention.

FIG. 12 is a cross-sectional view showing a pipe lining method (insertion of a pipe lining material reversing nozzle into a manhole) according to the present invention.

FIG. 13 is a cross-sectional view showing a pipe lining method (reversal insertion operation of a pipe lining material) according to the present invention.

FIG. 14 is a cross-sectional view showing a pipe lining method (reversal insertion operation of a pipe lining material) according to the present invention.

FIG. 15 is a cross-sectional view showing a pipe lining method (hardening operation of a pipe lining material) according to the present invention.

FIG. 16 is a cross-sectional view showing a conventional pipe lining method using a pipe lining material reversing nozzle (reversal insertion operation of a pipe lining material).

FIG. 17 is a cross-sectional view showing a conventional pipe lining method using a pipe lining material reversing nozzle (reversal insertion operation of a pipe lining material).

FIG. 18 is a cross-sectional view showing a conventional pipe lining method using a pipe lining material reversing nozzle (insertion of a pipe lining material into a manhole of a reversing nozzle).

[Explanation of symbols]

1,11,21,31,41 Pipe lining material reversing nozzle 2,62 Pipe lining material fixing nozzle 3,23,33,43,53 Guide tube fixing nozzle 4,14 Closing plate 8 Compressed air supply port 9 Drain port 10 Guide Tube 10a Inner surface guide tube 10b Surface guide tube 20 Pipe lining material 51, 61, 71 Pipe lining material reversing nozzle 80 Pipe

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 592004301 All Co., Ltd. 1-194, Hayashi, Tokorozawa-shi, Saitama 4 (72) Inventor Takao Kamiyama 31-27 Daikancho, Hiratsuka-shi, Kanagawa Shonan Synthetic Resin Co., Ltd. In-house (72) Inventor Yasuhiro Yokoshima 175-3 Shinoyama, Ishishita-cho, Yuki-gun, Ibaraki Pref.Yokoshimanai Co., Ltd. (72) Inventor Shigeru Endo 2-12-4 Hanahata, Tsukuba, Ibaraki Pref. Inventor Hiroyuki Aoki 1-194 Hayashi, Tokorozawa-shi, Saitama F-term in all four stock companies (reference) 4F211 AD03 AD05 AD16 AG03 AG08 SA14 SC03 SD08 SD11 SD16 SJ22 SP12

Claims (12)

[Claims] 1. A plate for closing a guide tube fixing nozzle for fixing one end of a guide tube, and a tube lining material fixing nozzle for fixing a folded one end of an unreversed tube lining material passed through the guide tube. A pipe lining material reversing nozzle characterized in that the diameter of the guide tube fixing nozzle is set smaller than the diameter of the tube lining material fixing nozzle. 2. The tube lining material reversing nozzle according to claim 1, wherein the closing plate is attached to an end of the tube lining material fixing nozzle. 3. The nozzle according to claim 1, wherein the guide tube fixing nozzle is inserted and held in a closing plate. 4. The nozzle according to claim 1, wherein said guide tube fixing nozzle is detachably attached to a closing plate. 5. The nozzle according to claim 1, wherein the nozzle for fixing the pipe lining material and the closing plate are configured to be separable. 6. The tube lining material reversing nozzle according to claim 1, wherein the guide tube fixing nozzle is obliquely inserted into and fixed to the closing plate. 7. The nozzle according to claim 1, wherein a bent portion is formed in a part of the guide tube fixing nozzle. 8. The nozzle according to claim 1, wherein a compressed air supply port is provided in the closing plate. 9. The pipe lining material reversing nozzle according to claim 1, wherein a drain port is provided in the closing plate or the pipe lining material fixing nozzle. 10. A plate for closing a guide tube fixing nozzle for fixing one end of a guide tube, and a tube lining material fixing nozzle for fixing a folded one end of an unreversed tube lining material passed through the guide tube. A pipe lining method constructed by using a pipe lining material reversing nozzle configured by setting the diameter of the guide tube fixing nozzle smaller than the diameter of the pipe lining material fixing nozzle. The lining material reversing nozzle is installed so that the pipe lining material fixing nozzle faces the opening of the pipe line, and the guide tube fixed to the guide tube fixing nozzle of the pipe lining material reversing nozzle extends substantially vertically to the ground. The pipe lining material fixed to the pipe lining material fixing nozzle is inserted upside down into the pipe by fluid pressure. And, while pressing the pipe lining material on the inner wall of the pipe, the pipe lining method which is characterized in that so as to cure the curable resin impregnated in the tube liner. 11. The guide tube comprises an inner guide tube and a surface guide tube having an inner / outer two-layer structure, the surface guide tube is attached to one end of the guide tube fixing nozzle, and the surface guide tube and the guide tube are provided. The pipe lining method according to claim 10, wherein the inner surface guide tube is passed through the inside of the fixed nozzle, and the end of the inner surface guide tube is turned back and attached to the other end of the guide tube fixed nozzle. 12. A pipe body separate from the pipe lining material is attached to one end of the pipe lining material, and an end of the tubular body is bent and attached to the pipe lining material fixing nozzle. The pipe lining method according to claim 10.